SEIS and EIS for UK Startups

Which trades qualify for SEIS — and which are excluded?

Most technology, software, manufacturing, and product businesses qualify for SEIS. The excluded activities are specific and generally relate to sectors where the government does not consider investment incentives to be necessary or appropriate. If your business does not fall into one of the excluded categories, it almost certainly carries on a qualifying trade.

Excluded activities include property development and dealing, financial activities (banking, insurance, money-lending, hire purchase, and most financial services), legal and accountancy services, farming and market gardening, hotels and nursing homes operated by the company, shipbuilding, coal and steel production, and the generation or export of electricity, heat, or gas in most forms. Leasing and letting of assets is also excluded if it constitutes a substantial part of the trade.

There is an important distinction between a company that carries on some excluded activities and one whose trade consists substantially of excluded activities. A software company that also earns some revenue from property rental is not necessarily disqualified — but if the property rental becomes substantial relative to the software business, it can affect eligibility. Your accountant should review the proportion of excluded activity if any part of your revenue comes from an excluded source.

What share structure does SEIS require?

SEIS shares must be new ordinary shares that carry no preferential rights to dividends or to the company's assets on a winding up, and no right of redemption. In practice, this means that the most common startup share structures — including standard preference shares used in institutional venture rounds — do not qualify for SEIS. The shares issued under SEIS must sit in a class that has no liquidation preference over ordinary shares.

Most early-stage UK startups issue a single class of ordinary shares for their SEIS round and then create a separate preference share class for later institutional investment. This is the standard approach recommended by startup solicitors and does not create any issue with SEIS qualification, provided the SEIS ordinary shares genuinely carry no preferential rights to assets on winding up relative to any other class of ordinary share.

Anti-dilution provisions, drag-along rights, and tag-along rights are generally acceptable. Liquidation preferences, cumulative dividends, and redemption rights are not compatible with SEIS share qualification.

Are there rules about who can invest under SEIS?

SEIS investors must be UK taxpayers to claim income tax relief — the relief operates by reducing the investor's UK income tax liability in the year of investment. Non-UK residents can invest in SEIS companies, but they cannot claim the income tax relief if they have no UK income tax liability. The CGT exemption requires the gain to be a UK CGT liability.

Employees and directors of the company can invest under SEIS with one important restriction: a director who is paid a salary by the company can invest under SEIS, but an employee (non-director) who is paid a salary cannot receive SEIS relief on their investment. This rule is designed to prevent SEIS from being used as a tax-advantaged compensation mechanism for existing staff.

Investors must hold their SEIS shares for a minimum of three years from the date of share issue to retain the income tax relief and qualify for the CGT exemption on disposal. If shares are disposed of within three years, the income tax relief is clawed back.

What are Knowledge-Intensive Companies and why do they get better EIS terms?

Knowledge-Intensive Companies (KICs) are a category of EIS-qualifying company that receives more generous investment limits and age thresholds in recognition of the longer development timescales typical of deep-tech, life sciences, and other research-intensive businesses.

To qualify as a KIC, a company must meet at least one of two conditions: either it has spent more than 15% of its operating costs on innovation activities in the year preceding the share issue, or it has spent more than 10% of its operating costs on innovation in each of the three years preceding the issue. Additionally, the company must be creating, acquiring, or licensing intellectual property as a significant part of its business.

KICs can access EIS for up to ten years after their first commercial sale (rather than seven), can have up to 500 employees (rather than 250), can raise up to £10m per year under EIS (rather than £5m), and can access the higher £2m per investor annual relief limit. For life sciences, deeptech, and engineering companies with long development cycles, the KIC classification is worth identifying and confirming with a specialist accountant before any EIS advance assurance application.

What tax reliefs do EIS investors actually receive?

EIS investors receive four distinct tax reliefs, each of which has independent value. Understanding all four matters because they collectively make EIS investment materially different from an equivalent unrelieved investment in a private company — and explaining them clearly to potential investors is part of investor-readiness.

The primary relief is 30% income tax relief on the amount invested, claimable against income tax in the year of investment or carried back to the previous tax year. On a £100,000 investment, this is £30,000 of income tax reclaimed from HMRC. The second relief is capital gains tax exemption: gains on EIS shares held for three or more years are exempt from CGT on disposal, regardless of the size of the gain. The third relief is CGT deferral: existing CGT liabilities can be deferred by reinvesting the gain into EIS shares, with the deferred gain not becoming payable until the EIS shares are sold. The fourth relief is loss relief: if the company fails and the shares become worthless, investors can claim loss relief at their marginal income tax rate on the net loss (investment minus income tax relief already received).

What should a UK startup do before applying for advance assurance?

Before submitting an advance assurance application, your accountant should review the company's existing share structure for any terms that would disqualify the SEIS shares, confirm that the company's trade is qualifying and that no substantial excluded activities exist, check whether any State Aid has been received that could affect SEIS eligibility, and confirm that the company meets all the age, employee, and asset thresholds at the anticipated date of share issuance.

This pre-application review typically takes two to three hours with a specialist accountant and is the step most frequently skipped by founders who prepare their own applications. The consequence of submitting without this review is either an HMRC rejection (typically on grounds of share structure or excluded activity) or, more seriously, issuing shares that appear to qualify but are subsequently found to be disqualifying — which triggers clawback of investor tax relief.

How does State Aid affect SEIS eligibility for Scottish, Welsh, and Northern Irish startups?

SEIS is itself a State Aid scheme, and accepting other State Aid alongside SEIS investment can affect eligibility. For startups in Scotland, Wales, and Northern Ireland, this is a particularly important planning issue because regional development bodies — Scottish Enterprise, Business Wales, and Invest NI — regularly provide grant funding that carries State Aid status.

The practical rule is that a company can receive de minimis State Aid (up to €300,000 over three years from all sources) without affecting SEIS eligibility. Many small grants from regional bodies fall within this threshold and do not create a problem. Larger grants or grants with full State Aid notification carry a higher risk of interaction and should be reviewed by your accountant before acceptance if SEIS shares have not yet been issued.

The safe sequencing for Scottish, Welsh, and Northern Irish startups is to obtain SEIS advance assurance and issue qualifying shares before accepting any significant regional grant funding. If grant funding is accepted first, the State Aid position of that grant must be confirmed as de minimis before the SEIS advance assurance application is submitted.

What are EIS3 and SEIS3 compliance statements?

After shares have been issued and the company has begun trading, HMRC issues compliance statements to the company — EIS3 for EIS investments and SEIS3 for SEIS investments. These statements are the documents that investors use to claim their income tax relief on their self-assessment tax returns. Without the compliance statements, investors cannot claim their relief.

Compliance statements are issued by HMRC after the company submits a compliance statement (EIS1 or SEIS1) confirming that all qualifying conditions have been met since the share issue. The typical timeline is three to six months after the investment — HMRC needs the company to have been trading for a period before it will issue compliance statements, to verify that the qualifying trade has been genuinely commenced.

Delays in issuing compliance statements are a common source of investor frustration and can damage the company's fundraising reputation. A specialist accountant managing your EIS/SEIS compliance will submit the EIS1/SEIS1 promptly once the conditions are met, and follow up with HMRC if statements are not issued within the expected period.

Issuing shares before obtaining advance assurance

The most consequential timing mistake is issuing shares to investors before advance assurance is obtained. Once shares are issued, the company cannot retroactively obtain advance assurance — HMRC only provides advance assurance for proposed share issues, not for shares already issued. Companies that have issued shares without advance assurance can still apply to HMRC for a compliance statement, but the process is more complex and investors face uncertainty about their relief throughout.

The correct sequence is: (1) agree investment terms in principle, (2) instruct accountant to prepare advance assurance application, (3) receive HMRC assurance letter, (4) issue shares. This sequence typically adds four to eight weeks to the fundraising timeline, which should be communicated to investors at the term sheet stage.

Preference share structures that disqualify SEIS/EIS

Companies that have previously incorporated with preference share structures — often because they used a US-style incorporation template or received early VC investment — sometimes find that their existing share structure disqualifies subsequent SEIS or EIS rounds. Preference shares with liquidation preferences, cumulative dividend rights, or redemption rights are incompatible with SEIS and EIS qualifying conditions if the SEIS or EIS shares rank below them on a winding up.

The fix is usually to restructure the existing preference shares before the SEIS round, converting them to ordinary shares or amending the rights to remove the preferential winding-up treatment. This restructuring must be completed and confirmed with HMRC before the advance assurance application is submitted.

Using SEIS/EIS funds for non-qualifying purposes

SEIS and EIS both require that the funds raised are used for the qualifying business activity within two years of the investment. Using SEIS or EIS funds to repay director loans, buy out existing shareholders, or fund activities outside the qualifying trade disqualifies those funds from relief — and can trigger clawback of investor relief already claimed.

The most common non-qualifying use is repayment of pre-investment director loans. Founders who have lent money to their company to fund early operations often plan to repay those loans from a SEIS round. HMRC regards this as a return of capital rather than use for qualifying business activity, and it disqualifies the corresponding proportion of the SEIS investment from relief. Director loans should be dealt with separately — typically by converting them to equity before the SEIS round — rather than repaid from SEIS proceeds.